Here I was fucking my nineteen-year-old sister-in-law, Mandy, while my wife slept. How could I do this? Yes, she was hot and she had been coming on to me for a year now. How did this little Mormon girl seduce me? I have been married for years to her sister, Mandy was eleven when I first met her. She was always the pretty one, the one who always got her way. She lived with her mom most of her life, a strict Mormon who kept a short leash on her and her sister, Helen. She would come to visit her dad and her stepsister every other weekend and try to experience the stuff her mom would not let her enjoy at home. She always made me buy her a Frappuccino; even as a little girl, she was rebellious.

When she turned seventeen she decided that she would not go to a Mormon college and her mother damn near had a heart attack. She forced her to reconsider by telling her she would be cut off. Reluctantly she left for a university in Utah. I later found out that she had a boyfriend during high school who she would jerk off and would go down on her from time to time. She was rebellious in high school too.

 After her first semester at BYU, she came to visit us and she had grown up, she was a beautiful young woman. With beautiful 34 C breasts on a 5’7 frame with an ass that could hold a mug of beer on it while standing. When I walked in from work and saw her, I didn’t even recognize her. The look she gave me was not that of a little sister-in-law.

I would later find out that she had almost gotten laid in college and this made her question everything. My wife Julie proceeded to try to help her out as best she could. she shared with her intimate details about our sex life and the things we did, making her curious and desiring to experience something similar.

We decided to all go camping, we brought Helen the even younger sister along with us too, Helen was two years younger than Mandy. We all went swimming on the lake and I decided to head back to camp to get dinner started before it got dark; Mandy had left earlier unbeknownst to me.

When I got to the camp, I saw the sexiest thing I had seen in a long while. Mandy was sitting on her sleeping bag inside her tent, with her bikini pulled to the side, flicking her little clit back and forth. One of her tits was out and she had this beautiful nipple that was so light it was almost indiscernible. God she was fucking hot, I watched her play with herself, for what seemed like twenty minutes, but really was more like two.

I heard Julie my wife and Helen her little sister, walking back to camp and I was startled back to reality. I could have sworn Mandy saw me looking at her, but she never looked up or said anything and disaster was averted. We all had a few drinks that night and the girls had wine for the first time in their lives. They seemed to really enjoy themselves and eventually, they all started to talk about boys and sex. I was asked some very daring questions which I tried to answer as technically as I could.

That night in the tent, I fucked my wife Julie like I hadn’t in a few years. All I could think of was Mandy my sister-in-law's pretty little pink pussy, and her beautiful tit. My wife would later be told by her sister that it sounded like I was trying to kill her that night.

The next day all day long Mandy kept finding ways to be near me and play around with me. She made little sexual innuendos, I could have sworn that she was trying to get my attention. I didn’t dare give her any attention, didn’t want to get killed there in the middle of nowhere, by my wife Julie. I survived this and it became just a good memory that I used in my sex life from time to time, that beautiful pink pussy being rubbed by a beautiful young girl, trying to find her sexual self.

It would be two years later during her second year of college that she called my wife and asked her if she could come and stay with us for a few months. Mandy was questioning her religious resolve and wanted to look into transferring to the local college. We would find out that she was being pressured into going on a mission and she was not one-hundred percent convinced she wanted to do it. So she figured she would try to make it on her own outside of her Mormon faith. She told us that she wanted to experience life and felt that religion was keeping her from enjoying herself and her youth.

Julie my wife asked me if I would be ok with it and, me being the good husband and brother-in-law I was, I quickly accepted. Mandy moved in and we soon found ourselves drinking together on the weekends, we would all watch movies together and drink a little. She became a great drinking buddy. This led to her being more forward with me and my wife, Mandy had been asking my wife Julie questions while I was at work about sex and how she would know how to do it. My wife Julie explained to her that she enjoyed having a cock in her mouth and how much I enjoyed getting blown. She asked her about sexual positions and what I and my wife enjoyed.

She seemed to be really curious about our sex life Julie would tell me. It was just more fuel to the fire for me, I am sure my wife would notice how much harder I would fuck her when we spoke about Mandy and her questions. Mandy continued to tease me and find ways to have her hands on me or sit next to me. If I jumped in the pool, there she was, with her sexy body in a bikini. It seemed like I was constantly needing to fuck my wife or rub one out because of this girl and her games. She was a walking, talking temptation, who seemed to relish making me uncomfortable.

One weekend I went out with some friends for a few hours and when I came back home I saw that Helen the little sister was over and all three sisters had been drinking, I could see two empty bottles of wine on the floor and a third almost gone. I walked in and they were pretty drunk, Julie walked up to me and gave me a big wet sloppy kiss. I could tell Julie was horny, booze makes her get that way fast. Mandy and Helen then both walked over and gave me a kiss too but in a playful manner. At least Helen did, Mandy kissed me on my mouth, not dead on but she touched my lips. I was instantly hard, I brought over a fourth bottle of wine and started chatting with them, when Julie excused herself to the bathroom, Mandy let it slip that they had all three watched porn together. Apparently, someone asked about it, and having not seen any before they decided to give it a chance, but they were not supposed to tell me anything about it. Before I could ask any further questions, Julie was back, and we all started watching some TV.

There I was, on a couch with my beautiful wife and her two gorgeous sister in the sofa watching some rom-com. All I could think about was fucking them all….

We brought out the blankets, they all got comfortable on the couch and I was starting to doze off, Julie was the first to fall asleep. Helen then left for the restroom and never came back. Mandy stretched one of her legs on top of me and was kind of moving in a strange way. When I turned to look, I thought I saw her touching herself, right there on the couch with her sister next to her and me on the other side. I had a few drinks myself, so I thought my mind was playing tricks on me.

I then received a text from Mandy who was sitting next to me: "You are not going to look at me this time?"

I was, to say the least, shocked Mandy had seen me watch her two years before while camping. Mandy opened her robe and showed me a glimpse of her naked pussy, I thought there is no way she is naked under there. She was touching her wet pussy and I didn’t know what to do. I reached over to her and touched that beautiful pink pussy, it had a nice little landing strip, which was an invitation to touch. I fingered her beautiful clit, it was engorged and begging for attention. Her pussy glistened and I gently placed my tongue on it. She must have forgotten where she was because she started moaning loudly. I immediately stopped, I came to my senses and remembered that my wife was right there next to us. So I decided I needed to find a way to be with Mandy all alone somewhere else.

I woke Julie up and took her to our bed, Mandy left to her bedroom I assumed and I turned off the TV and took the empty bottles to the kitchen, I saw one of our bathrooms open and Helen walked out looking like she had fallen asleep in the toilet while puking. I walked her back to the room she would have to share with Mandy tonight and laid her down in the bed. She was drunk out of her mind and could barely stay on her feet. Drinking at seventeen is always a bad idea. I slapped her on her ass and left her in her bed. It was Curious that Mandy was nowhere to be seen, I was hoping to continue eating her out, but I had made up my mind that I was going to fuck her even if it killed me. I turned the lights off and walked towards my bedroom when Mandy jumps out from behind my bedroom door and reaches for my dick. She asked me if I wanted to finish what we started.

I told her that her little sister Helen was in her room and that we could not go into my bedroom. when she asked me what she was going to have to do, to get me to fuck her. I forgot about the world, I grabbed her and kissed her in the most urgent way I could. I opened her robe and my suspicions were correct, she was not wearing anything underneath. we walked into the master bedroom bathroom and I could not hold back any longer. I forgot about everything and everyone, life only existed at that moment with me and Mandy only.

I placed one finger on her pussy, I have never felt something so wet in my life. I walked her to the bathroom and proceeded to have her lean on the sink while I stared at the tiniest pussy I have ever seen. I could not decide what to do, should I eat this pussy, fuck her as fast and hard as I could before someone woke up? I decided to get on my knees and taste her, she tasted so sweet, like a sweet cantaloupe. She again started moaning, so I stood up and started kissing her again. She pulled my shorts off and allowed my dick to spring out. It had so much pre cum I could have fucked her in the ass and it would have glided right in.

I pointed my dick to her pussy and proceeded to try to insert it. It was so tight, I could not believe it, she then told me to please go slow because it was her first time, another surprise for me. I was shocked, how could it be, this wanton sexual nymph, was a virgin? Two seconds later and I was in the tightest pussy I had ever fucked; she was in obvious pain so she wanted to try something else. She asked that I lay down on the floor and she would lower herself on to me, she slowly proceeded to lower herself on to me, my dick was in the tightest pussy I can ever remember fucking.

Mandy asked me to go slowly and to please give her time to adjust to me. I am not that big, seven inches max but to her little pussy it seemed like a tree trunk was impaling her. I was close to coming after a few strokes when she told me not to come in her because she just got on the pill a few days ago and she was not sure it was effective yet. She told me that she could take it in her ass, that she had already been fucked there before (I would need to ask about that later). I didn’t need to be told twice, I pulled my dick out, cleaned away the trickle of blood on it, and jerked off into her stomach.

I would fuck her ass later. I didn't want her first time to be about me. God, that felt good. I had not been able to come in her this time.

She kissed me and told me that we were going to have to do that again; she didn’t ask, she demanded it.

My life would only get crazier from here on……..